Acoustics - Measurement of sound absorption properties of road surfaces in situ

In-situ measurement of sound absorption properties of road surfaces aims to determine the sound absorption coefficient and complex acoustic impedance of the road surface; verifying the conformity of the sound absorption coefficient of the road surface with design specifications or other requirements…

 

Content Overview In-situ measurement of sound absorption properties of road surfaces

Test method name: Acoustics – Measurement of sound absorption properties of road surfaces in situ – Part 2: Spot method for reflective surfaces.

Test method:

ISO 13472-2:2010: Acoustics – Measurement of sound absorption properties of road surfaces in situ – Part 2: Spot method for reflective surfaces[1].

Performed at: On-site.

1. Objectives, subjects & laboratory

1.1. Test objectives

This standard specifies a test method for measuring in situ the sound absorption coefficient of road surfaces for one-third octave band frequencies ranging from 250 Hz to 1,600 Hz under normal incidence conditions. For special purposes, the frequency range may be altered by modifying the dimensions of the system.

The test method is intended for:

1. a) determining the sound absorption coefficient of semi-dense to dense road surfaces (and, if of interest, also the complex acoustic impedance);
2. b) determining the sound absorption characteristics of test tracks according to standards such as ISO 10844 and test surfaces specified in national and international type approval regulations for road vehicles and tyres;
3. c) verifying the conformity of the sound absorption coefficient of the road surface with design specifications or other requirements.

1.2. Test subject

Road traffic surfaces.

1.3. Experimental conditions

+ Road standard

+ Road surface

+ Temperature

2. Test procedure

• Implementation steps:

+ System stabilization

+ Calibration

+ Background noise

+ Road sample measurement

+ Result analysis

• Processing and reporting results.

 

Role – importance of In-situ measurement of sound absorption properties of road surfaces

In-situ measurement of sound absorption properties of road surfaces performed by the DASM Institute provides useful information, meeting all practical needs of customers and enterprises wishing to:

• Determine the sound absorption coefficient and complex acoustic impedance of the road surface.
• Determine the sound absorption characteristics of test tracks according to standards such as ISO 10844 and test surfaces specified in national and international type approval regulations for road vehicles and tyres.
• Verify the conformity of the sound absorption coefficient of the road surface with design specifications or other requirements.

If previously you still had concerns, worries and had to pay many fees for similar activities abroad, now you just need to contact DASM. The entire remaining process will be proactively implemented by us as a complete package in the fastest time to enhance the customer experience with us: DASM provides acoustic consulting services with truly superior quality, the most competitive prices in the industry along with thoughtful and dedicated customer care policies.

Significance of acoustic testing services at DASM

Today's globalized commercial life opens up countless new markets and sources of supply across five continents. Accompanied by international regulations and standards that help customers easily evaluate quality – trace product origin, select suitable/superior items. In particular, they support manufacturers in continuously improving and perfecting technology, techniques, raw materials, production methods, sales… etc…

The DASM Institute is a pioneering, comprehensive, professional and leading prestigious brand in Vietnam in the field of acoustics. On January 12, 2023, DASM was granted certificate number 114/TĐC – HCHQ by the Directorate for Standards, Metrology and Quality (Ministry of Science and Technology), certifying registered multi-sector testing activities in the field of Mechanical - Physical (registration number: 707/TN – TĐC).

Our acoustic testing services provide customers with practical professional results to meet sustainability, standard performance, optimal solutions – consulting – design adjustments… for products and services. From there, you will update, meet and adapt to constantly changing international standards to make breakthroughs in revenue, profit and elevate your brand.

If you have a need to perform In-situ measurement of sound absorption properties of road surfaces please contact via Hotline for detailed consultation!